On Sun, 2007-05-20 at 18:02 +0200, Segher Boessenkool wrote: > > In fact, while it's never worded explicitely in the spec, it's always > > been strongly in the "spirit" of the architecture that the timebase and > > decrementer have a constant frequency. > > The architecture mentions varying time base frequencies, > and how to deal with this, actually. It makes no > recommendations one way or the other.
I might be mixing up with PAPR... anyway, it's very stupid to vary it imho. And as I just said, I have about 0 plan to imlement support for such a contraption. > Fixed frequencies are easier for almost everything of > course :-) Yup. > > This is why processors like the > > 970 allow for an external sourcing for when they are used in setups > > where the various clocks are slewed for power management. > > Clock spreading on the core clock is the bigger problem, > lack of accuracy on the order of 1% is unacceptable for > certain applications. That too. Ben. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
